The iconic shower scene in 'Psycho' used chocolate syrup as blood due to black-and-white filming. It made the scene even more chilling.
In 'Jurassic Park,' the T-Rex roars were a blend of dog, penguin, tiger, alligator, and elephant sounds, creating the terrifying dinosaur's roar.
During 'The Shining' filming, Jack Nicholson ad-libbed the famous 'Here's Johnny!' line, inspired by 'The Tonight Show Starring Johnny Carson.'
The 'Titanic' film set had a near-disastrous incident when a catering ship crashed into the main set, causing chaos and delays in production.
For 'The Wizard of Oz,' Buddy Ebsen was originally cast as the Tin Man but had a severe reaction to the aluminum powder makeup, leading to recasting.
In 'Jaws,' the mechanical shark malfunctioned frequently, forcing Spielberg to shoot around its appearances, creating suspense through its unseen presence.